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Characteristic data of the DP interface of the CM 1243-5
● Number of DP slaves operable with a DP master: Maximum 16 *
● Total number of operable slots: Maximum 256
● Size of the DP data areas of the DP master: Max. 1024 bytes
● Maximum size of the DP data areas of the DP slaves
Characteristic data of S7 communication
● Number of possible connections for S7 communication in total: 8
● User data per frame
1.4
Requirements for operation
Configuration tool
To configure the module, the following configuration tool is required:
CM 1243-5
Operating Instructions, 04/2011, C79000-G8976-C246-01
Any distribution of the slots as I slots and Q slots is permitted.
– Input area of the DP master in total: Max. 512 bytes
– Output area of the DP master in total: Max. 512 bytes
– Input area per DP slave: Max. 244 bytes
– Output area per DP slave: Max. 244 bytes
– Diagnostics data area per DP slave: Max. 244 bytes
NOTICE
*
Maximum 16 DP slaves per station
)
For the constellation STEP 7 V11.0 and CPU firmware V2.0, resources are available
for a maximum 16 DP slaves in total per station.
If you plug in a master module (CM 1243-5) and 1 or 2 slave modules (CM 1242-5) in
a station at the same time, the maximum number of slaves that can be operated with
the CM 1243-5 reduces by the CM 1242-5 modules plugged into the same station.
The number of DP slaves that can be operated with the DP master is therefore
reduced to 15 or 14.
Of which maximum:
– Configured connections for PUT/GET services: 4
– PG connections: 1
– OP connections: 3
– PUT: Max. 209 bytes
– GET: Max. 222 bytes
Application and properties
1.4 Requirements for operation
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